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Commit 321a4bf7 authored by Anand Jain's avatar Anand Jain Committed by David Sterba
Browse files

btrfs: use the assigned fs_devices instead of the dereference 



We have assigned the %fs_info->fs_devices in %fs_devices as its not
modified just use it for the mutex_lock().

Signed-off-by: default avatarAnand Jain <anand.jain@oracle.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 62088ca7

fs/btrfs/volumes.c

+2 −2
Original line number Diff line number Diff line
@@ -2211,7 +2211,7 @@ static int btrfs_prepare_sprout(struct btrfs_fs_info *fs_info) 
	INIT_LIST_HEAD(&seed_devices->alloc_list);

	mutex_init(&seed_devices->device_list_mutex);



	mutex_lock(&fs_info->fs_devices->device_list_mutex);

	mutex_lock(&fs_devices->device_list_mutex);

	list_splice_init_rcu(&fs_devices->devices, &seed_devices->devices,

			      synchronize_rcu);

	list_for_each_entry(device, &seed_devices->devices, dev_list)
@@ -2231,7 +2231,7 @@ static int btrfs_prepare_sprout(struct btrfs_fs_info *fs_info) 
	generate_random_uuid(fs_devices->fsid);

	memcpy(fs_info->fsid, fs_devices->fsid, BTRFS_FSID_SIZE);

	memcpy(disk_super->fsid, fs_devices->fsid, BTRFS_FSID_SIZE);

	mutex_unlock(&fs_info->fs_devices->device_list_mutex);

	mutex_unlock(&fs_devices->device_list_mutex);



	super_flags = btrfs_super_flags(disk_super) &

		      ~BTRFS_SUPER_FLAG_SEEDING;